where \(T\) is the total amount of energy distributed among \(N\) atoms. When thermal equilibrium is reached with another body of \(n\) atoms, we have a measure,
\(K=\cfrac{T+T_o}{N+n}\)
obviously,
\(K=\cfrac{T+T_o}{N+n}\ne\cfrac{T}{N}\)
When \(T\) is large or \(N\) is large then
\(\cfrac{T+T_o}{N+n}\approx\cfrac{T}{N}\)
but when \(T\) is small or \(N\) is small, the measurement fails.
